Ademco AMC21
Ademco AMC21 CRT RGB mod
This tutorial covers the RGB mod for Ademco AMC21.
View full CRT details and more mod examples →
Contributors
Thank you to everyone who contributed to this guide:
- Sunthar — contributor, RGB mux diagram
- Dan Lavoie — contributor, Pictures
CRT safety
Caution
You can die doing this! So read carefully! CRT TV is not a toy. Do not open a CRT TV. If you don't have any prior knowledge about handling high voltage devices, this guide is not for you. CRT TV contains high enough voltage (20,000+ V) and current to be deadly, even when it is turned off.
Plan of attack
Service manuals
Specs
- Year:
- Jungle Chip: Micronas VDP3130Y
- Screen Size: 21"
RGB mux diagram
This mod uses the RGB mux board. This is optional, but will make your mod easier and stable. You can also create the circuit presented in the schematics above without the board. Please also checkout the mux calculator to play with your own values.
| Component | Value |
|---|---|
| RGB/OSD inline resistor (chassis) | 1kΩ |
| Removed RGB/OSD resistor (chassis) | 120Ω |
| RGB termination (R1, R2, R3) | 75Ω |
| RGB inline (R4, R5, R6) | 120Ω |
| Audio LR (R7, R8) | 1kΩ |
| Diode (R9) | 1N4148 |
| Blanking Ground Resistor (R10) | open |
| Blanking Resistor (R11) | 120Ω |
Performing the mod
RGB mod for this set is not yet confirmed. Follow these instructions at your own risk.
You will attach your sync to S-Video luma Y (Line B) and Audio to (Audio B) in. Ground closer to the video
Pictures
Reference Photos
